Slide mount



March 31, 1959 S. S. KWOLEK SLIDE MOUNT Filed Aug. 22, 1952 :ELE: E 44 '/26 28"? l /lz 2a f44\ I'E "E ,..Ll- [42 1 n nin .f 22 U50 05m .f \4zf 44 I. E111-1:5 g /MQB 5 I: E J

//,?a.. /ar 251 INVENTOR.

SLIDE MOUNT Stephen S. Kwolek, Garden City, Mich., assigner to Joseph M. Kwolek, Garden City, Mich.

Application August 22, 1952, Serial No. 305,870

4 Claims. (Cl. 40-158) The present invention relates to apparatus for preparing and mounting stereo film transparencies.

In recent years many improvements'and developments have been made in stereo type cameras, but there has not been a corresponding advance in the :arts relating to the mounting of the stereo lm transparencies. Consequently, the excellent three dimensional illustrations that are obtainable from these cameras have not always been realized. This has been particularly true when photographers have attempted to do their own mounting.

As is well known to persons skilled in the art, stereo type cameras normally use rolls of 35 mm. film, and two exposures are made simultaneously on different portions of the film through two separate shutters. When the lm has been developed, the two associated trans'- parencies are mounted on a panel having two spaced openings through which they can be viewed. Accurate locating of these associated transparencies with respect to one another is vital if a good three dimensional picture is to be obtained.

The methods heretofore used for mounting the transparencies have proved to have much variation and error causing poor illustrations in the viewers as well as on screens when projectors are employed. These difficulties arise because the transparencies used prior to the present invention have been positioned with respect to one another by employing their cut edges for measuring and positioning them on the panel, or in jigs and fixtures used in the mounting operation. These cut edges are not always uniform and parallel especially when the lm has been cut by the amateur or hobbyist. rl`hese difiiculties have been further aggravated by some of the prior mountings which permit the transparencies to shift during the mounting operation or sometimes even after the transparencies have been mounted.

It is a principal object of the present invention to provide a mounting for associated stereo film transparencies which is constructed and arranged to utilize the perforations in the lm for accurately mounting such transparencies with respect to one another and so that they will not become misaligned during normal use, :and further, so that amateur photographers as well as skilled technicians can perform the mounting operation with equal skill, and dexterity.

It is another object of the present invention to provide a -mounting of the foregoing character in which the mounting comprises a panel having accurately located slots for receiving tongues cut from the webbing in the perforated portions of the iilm.

It is still another object of the present invention to provide a mounting of the foregoing character wherein the panel is a portion of a folder within which the panel is Wrapped to provide a protective jacket therefor.

Other objects of this invention will appear in the following description and appended claims, reference being had to the accompanying drawings forming a part of this specification wherein like reference characters designate corresponding parts in the several views.

States Patent C "ce 2,879,615 v Patented Mar. '31,'1959 In the drawings:

Fig. 1 is a front elevation of a folder embodying one form of the present invention in which a pair of associated stereo iilm transparencies are mounted;

Fig. 2 illustrates the folder in its unfolded position, and the location in which the transparencies will be mounted is shown in broken'lines;

Fig. 3 illustrates one transparency with its webbing cut in preparation for mounting the same;

Fig. 4 illustrates one method by which the transparency can be mounted on a mounting panel;

Fig. 5 illustrates a mounting panel which is the same as that used with the folder illustrated in Figs. 1 and 2, but which is adapted for use with glass slides or the like;

Before explaining the present invention in detail, it is to be understood that the invention is not limited in its application' to the details of construction and arrangement 'of parts illustrated in the accompanying drawings, since the invention is capable of other embodiments and of being practiced or carried out in various ways. Also, it is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation.

Referring to the drawings, a more detailed description of the several features of the present invention will be given. The folder 10 which is adapted to be used with a conventional stereo viewer or stereoscope (not shown) is preferably made from cardboard, although other suitable materials may also be employed.

The folder 10 has three integral sections or panels 12, 14 and 16 and a tongue or flap 18 which are adapted to be folded along the broken lines 2t), 22 and 24, Fig. 2, to form the compact folder shown in Fig. l. The flap can then be glued, stapled or fastened in any other suit able manner to the section 14.

Each of the panels 12, 14 and 16 have a pair 0f openings 26 and 28 which will register when the folder 10 has been folded together so that a pair of associated stereo lm transparencies 30 and 32 can be viewed therethrough. As has been explained previously, it is vital to obtaining good views that the transparencies 30 and 32 be accurately located with respect to one another.

The manner in which the transparencies are mounted is an important feature of the present invention. As is well known, the dimensioning of the apertures in a roll of film is very accurate, and the present invention utilizes these accurately dimensioned portions of the lm for mounting the transparencies on the panel.

Referring to Figs. 2, 3, and 4, the mounting of the transparencies will be explained. The transparency 34 can be seen as it appears immediately after being cut from the film by the cutter (not shown). The transparency 34 has been cut from the roll of lm (not shown) along the edges 36 and 3S, and it has also been cut across the webbings between the apertures, as at 40, thereby providing four tongues 42.

These tongues 42 are then bent out of the plane of the transparency by using tweezers 43, Fig. 4, and they are inserted one at a time into slots 44 located either above or below the openings 26 and 28. If desired, the cutter (not shown) may be designed to cut the webbings 40 and at the same time deflect the tongues 42 out of the plane of the transparency to facilitate inserting the same into the slots 44. This operation can be carried out quickly and does not require any particular skill. Nor is there any chance for misaligning the associated transparencies during mounting of the same. The slots 44 as well as openings 26 and 28 are cut in the folder 10 at the place of manufacturing the same by precision dies so that they will always be cut exactly the same. Furthermore, the slots 44 in the upper row are uniformly spaced from the slots 44 in the lower row so between the bases, f the tonsuesttinihe pretend lower rows on the transparency 34. Thus, once the tongues 42 have been inserted in place they will remain stationary `in proper alignment. Also, if it is Vdesired to remove `the transparency, this can bdonemerely by using the tweezers 43 to bend the transparency 34 an pull the same from the panel 12.

that the spacing is approximately equal'to the spacing For some purposes it is desired to have the 4.stereo A film transparencies mounted between glass plates rather than in a folder. The transparencies are then mounted on a single panel 12a, Fig. 5, and this operation is performed in the same manner as described above with respect to panel 12. In Fig. the corresponding -parts are designated by like reference numbers followedl by the letter a. I

i I-Having thus'deseribed my-invention, I claim: l

Jl'flir combination, a' pair'of associated stereo lm transparencies having a series of camera sproclret apertures longitudinally aligned along upper and lower edge 'portions thereof, said apertures being uniformly spaced apart in the longitudinal direction of the lm transparencies by webbings extending transversely of said longitudinal direction, each of said transparencies having two of its upper and two of its lower webbings severed adjacent their inner ends so as to form two tongues extending downwardly from the upper edge portion and two tongues extending upwardly from the lower edge portion, and a panel having two spaced openings over which said transparencies are mounted, said panel having a set of four longitudinally aligned slots positioned two above each opening and a second set of four longitudinally aligned slots in parallel relationship to the first named set of slots and positioned two below each opening, the distance between thetwo sets of parallel slots being substantially the distance between parallel lines extending respectfully through the bases of the tongues in the upper and lower edge portions of the transparencies, the length of each slot being substantially equal to the width of each tongue and said slots being disposed the same distance apart as said tongues so that insertion of the tongues into corresponding slots of said panel secures the transparencies in place over the openings with the transparencies being retained in fixed relation to one another.

2. In combination, a pair of associated stereo film transparencies having a series of camera sprocket apertures longitudinally aligned along upper and lower edge portions thereof, said apertures being uniformly spaced apart in the longitudinal direction of the ilm transparencies by webbings extending transversely of said longitudinal direction, each of said transparencies having two of its upper and two of its lower webbings severed adjacent their inner ends so as to form two tongues extending downwardly from the upper edge portion and two tongues extending upwardly from the lower edge portion, and a panel having two spaced openings over which said transparencies are mounted, said panel having a set of four longitudinally aligned slots positioned two above each opening and a second set of four longitudinally aligned slots in parallel relationship to the irst named set of slots and positioned two below each opening, the distance between the two sets of parallel slots being substantially the distance between parallel lines extending respectfully through the bases of the tongues in the upper and lower edge portions of the transparencies, the length of each slot .being substantially equal to the width of each tongue and said slots being disposed the same distance apart as said tongues so that insertion of the tongues into corresponding slots of said panel secures the transparencies in place over the'openings with'the transparencies being retained in fixed relation to one another, 'said panel being one of a series of joined panels having similarly arranged pairs of openings, said series of joined panels being folded ssl - 4 together with the first named panel between two other panels and with their openings in registry.

' 3. In combination, a pair of associated stereo iilm transparencies having a series of camera sprocket apertures longitudinally aligned along upper and lower edge portions thereof, said apertures being uniformly spaced apart in the longitudinal direction of the lm transparencies by webbings extending transversely of said longitudinal direction, each of said transparencies having two of its upper and two of its lower webbings severed adjacent their inner ends so as to form two tongues extending downwardly from the upper edge portion and two tongues extending upwardly from the lower edge portion, and a panel having two spaced openings over which said transparencies are mounted, said panel having a set of four longitudinally aligned slots positioned two above each opening and a second set of four longitudinally aligned slots in parallel relationship to the first named set of slots and positioned two below each opening, the distance between the two sets of parallel slots being substantially the distance between parallel lines extendingrespectfully through the bases of the tongues in the upper and lower edge portions of the transparencies, the length of each slot being substantially equal to the width of eachtongue and said slots being disposed the same distance apart as said tongues so that insertion of the tongues into corresponding slots of said panel secures the transparencies in" 'retained in xed relation to one another, said 'panel being the end one of three joined panels having similarly arranged pairs of openings, said three panels being folded together with the first named panel folded between theA other two panels and with their openings in regsry, the other end panel having an integral tongue at its outer edge for securing the three panels together.

4. In combination, a pair of associated stereo film transparencies having a series of camera sprocket apertures longitudinally aligned along upper and lower edge portions thereof, said apertures being uniformly spaced apart in the longitudinal direction of the film transparencies by webbings extending transversely of said longitudinal direction, each of said transparencies having two of its upper and two of its lower webbings severed adjacent their ends so as to form two tongues in the upper edge portion and two tongues in the lower edge portion, said tongues in the upper edge portion extending in the opposite direction from the tongues in the lower edge portion, and a panel having two spaced openings over which said transparencies are mounted, said panel having a set of four longitudinally aligned slots positioned two above each opening and a second set of four longitudinally aligned slots in parallel relationship to the first named set of slots and positioned two below each opening, the distance between the two sets of parallel slots being substantially the distance between parallel lines extending respectfully through the bases of the tongues in the upper and lower edge portions of the transparencies, the length of each slot being substantially equal to the width of each tongue and said slots being disposed the same distance apart as said tongues so that insertion of the tonguesinto corresponding slots of said4 panel secures the transparencies in place over the openings with the transparencies being retained in xed relation to one another.

References Cited in the tile of this patent UNITED STATES PATENTS (Other references on following page) 5 6 UNITED STATES PATENTS 2,588,043 Rabinwitz etal Mar. 4, 19.52 2,616,197 osburn 1-- Nov. 4, 1952 gg 211ml guile ggg 2,656,631 cadweu oct. 27, 1953 eerup u y 2,220,499 Thomas Nov. 5, 1940 5 FOREIGN PATENTS 2,477,470 Williams July 26, 1949 431,032 Great Britain June 28, 1935 2,495,142 Seary Jan. 17, 1950 900,366 France Oct. 2, 1944 2,587,434 Boaden Feb. 26, 1952 419,552 Italy Apr. 1, 1947 

